BS ISO 10791-5:1998
Current
The latest, up-to-date edition.
Test conditions for machining centres Accuracy and repeatability of positioning of work-holding pallets
Hardcopy , PDF
English
15-05-1998
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1 Scope
2 Normative references
3 Preliminary remarks
3.1 Measuring units
3.2 Reference to ISO 230-1 and ISO 230-2
3.3 Axes coding
3.4 Tests to be performed
3.5 Measuring instruments
4 Repeatability of positioning of individual pallets on
the machine
4.1 Location of instruments
4.2 Measurement procedure
4.3 Formulae for calculating the deviations from
individual readings
4.4 Tolerances
4.5 Checking and measuring instruments
4.6 Reference to ISO 230-2
4.7 Measured deviations
5 Positioning accuracy of a batch of pallets relative
to a pallet receiver
5.1 Location of instruments
5.2 Formulae for calculating the deviations from
individual readings
5.3 Tolerances
5.4 Checking and measuring instruments
5.5 Reference to ISO 230-2
5.6 Measured deviations
Annex A (informative) Bibliography
Defines the tests for assessment of the repeatability of positioning of individual pallets, together with the total accuracy of positioning of a batch of pallets associated with a specified machine. (Ref. ISO 230 pt1, ISO 230 pt2).
| Committee |
MTE/1/2
|
| DevelopmentNote |
Supersedes 95/707403 DC. Partially supersedes BS 4656-30(1992). (08/2004)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO 10791 specifies, with reference to ISO 230-1 and ISO 230-2, the tests intended to assess the repeatability of positioning of individual pallets and the total accuracy of positioning of a batch of pallets associated with a specific machine.
In a manufacturing system the accuracy of positioning of a workpiece or a work-holding fixture depends on the fitting between pallets and receivers. It should be noted that this part of ISO 10791 applies to a single machining centre, i.e. to the single receiver, with multiple pallets.
The results of the tests considered here could be extended to the whole manufacturing system only if the measuring instruments were placed on the different machines exactly in the same position with respect to the origins of the linear axes. This, in practice, is difficult and inaccurate, because origins of the linear axis are affected by the repeatability of the axes.
| Standards | Relationship |
| SN ISO 10791-5 : 1998 | Identical |
| ISO 10791-5:1998 | Identical |
| ISO 8526-1:1990 | Modular units for machine tools Workholding pallets Part 1: Workholding pallets up to 800 mm nominal size |
| ISO 841:2001 | Industrial automation systems and integration — Numerical control of machines — Coordinate system and motion nomenclature |
| ISO 230-1:2012 | Test code for machine tools — Part 1: Geometric accuracy of machines operating under no-load or quasi-static conditions |
| ISO 230-2:2014 | Test code for machine tools — Part 2: Determination of accuracy and repeatability of positioning of numerically controlled axes |
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